Note: MetaMask recently updated the ChainID to be a required field. When you update, you may need to reenter thechain id 100, and it will be converted to a hexidecimal:0x64.
If you are having issues, try entering 100 for Chain ID and resaving the configuration.
If you'd prefer not to make these changes,provides a built-in xDai RPC.
Connecting to a Hardware Wallet
Instructions for using MetaMask with a Ledger or Trezor:https://metamask.zendesk.com/hc/en-us/articles/360020394612-How-to-connect-a-Trezor-or-Ledger-Hardware-Wallet
Guide was taken from Tokenbridge. For more information regarding the bridge, please refer todocs.tokenbridge.net.